This bag absolutely saved my back! I ride the crowded subways in NYC for an hour there and back to work. With my normal purse I would get
home every day and be in such pain. After a week of using this bag for my commute, I stopped experiencing the back pain. I find this bag to be a tiny bit too small; its hard to fit my wallet, my nook, a snack, and all my other crap. I also find some of the pockets a bit difficult to get in and out of. I may purchase the 'medium' size and see how that works as well. Overall, this was totally worth it.